InoyOleh
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1. The issue is that too many Tier 7 creatures appear, specifically 2 dragons per week. Dragons are too legendary to appear in pairs. Furthermore, the lower tiers are significantly weaker in terms of growth rate, and there are no options to boost them besides external dwellings and hero purchases.
2. To make upgrades play a significant role in terms of immediate strengthening. They should provide a greater number of creatures than building a basic dwelling.
3. Because these tiers have the weakest dwellings, so there is a reason to strengthen them specifically with fortifications. To avoid a situation where the higher tiers are better in every way.
2. I disagree; let the base be 100%, and the upgrade also be 100% (as in the case of 50% and 50% in your version).
3. Then, I like the x1 fort: for Tiers 1-2, x2 Stronghold: for Tiers 1-4, x3 Castle: for Tiers 1-6.
Example: Tier 1 Militia: 10 base + 10 upgrade + 10 fort + 10 Stronghold + 10 Castle.
Tier 6 Griffins: 4 base + 4 upgrade + 4 Castle.
As I recall, you said you like small growth rates and battles with small armies.
In my version, the creature growth per week is less than in your second version.
I like your first scheme more.